UPD

Author: howbizarre

index.html

@@ -20,9 +20,6 @@
                 right: 5px;
             }
 
-            .w-5 { width: 20px; }
-            .h-5 { height: 20px; }
-
             .hidden { display: none; }
         </style>
     </head>
@@ -31,10 +28,10 @@
 
         <aside class="aside">
             <span id="theme-toggle" type="button">
-                <svg id="light-icon" class="hidden w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg">
+                <svg id="light-icon" width="20" height="20" class="hidden" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg">
                     <path d="M17.293 13.293A8 8 0 016.707 2.707a8.001 8.001 0 1010.586 10.586z"></path>
                 </svg>
-                <svg id="dark-icon" class="hidden w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg">
+                <svg id="dark-icon" width="20" height="20" class="hidden" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg">
                     <path d="M10 2a1 1 0 011 1v1a1 1 0 11-2 0V3a1 1 0 011-1zm4 8a4 4 0 11-8 0 4 4 0 018 0zm-.464 4.95l.707.707a1 1 0 001.414-1.414l-.707-.707a1 1 0 00-1.414 1.414zm2.12-10.607a1 1 0 010 1.414l-.706.707a1 1 0 11-1.414-1.414l.707-.707a1 1 0 011.414 0zM17 11a1 1 0 100-2h-1a1 1 0 100 2h1zm-7 4a1 1 0 011 1v1a1 1 0 11-2 0v-1a1 1 0 011-1zM5.05 6.464A1 1 0 106.465 5.05l-.708-.707a1 1 0 00-1.414 1.414l.707.707zm1.414 8.486l-.707.707a1 1 0 01-1.414-1.414l.707-.707a1 1 0 011.414 1.414zM4 11a1 1 0 100-2H3a1 1 0 000 2h1z" fill-rule="evenodd" clip-rule="evenodd"></path>
                 </svg>
             <span/>

src/components/Nav.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="container">
     <nav class="navbar navbar-expand-lg mb-4 border-bottom">
-      <router-link :to="routes[0].path" class="navbar-brand d-flex align-items-center text-dark text-decoration-none">
+      <router-link :to="routes[0].path" class="navbar-brand d-flex align-items-center text-decoration-none">
         <svg xmlns="http://www.w3.org/2000/svg" height="32" viewBox="0 0 261.76 226.69">
           <path d="M161.096.001l-30.225 52.351L100.647.001H-.005l130.877 226.688L261.749.001z" fill="#41b883" />
           <path d="M161.096.001l-30.225 52.351L100.647.001H52.346l78.526 136.01L209.398.001z" fill="#34495e" />